For ten years on the london underground, i would always stand in the busiest, usually the middle car, by standing with the biggest section of crowd on the platform you can guarantee a crowded carraige.
Then I'd let the last people on, "push" me slowly against any young girl. people on those trains are used to the conditions and wouldn't think twice about someone against them when the train took off.
I would then let the motion of the carraige move me against my chosen girl. By looking off a different way and feigning discomfort at being squashed in, the girl usually just ignored it and put it down to overcrowding.
My favourite was when I'd have a nice sized tit or tits squashed into my arm or my side for the whole journey!!
If they were getting off before me I'd try and let them past me awkwardly and make sure they brushed against the hard on they had caused!
I suppose the wife must have wondered why I'd try and jump her as soon as I'd come in the door.
But I fucking love this idea of leaving some seed on them!! Class stuff OP!!
The Horny Irishman.